Filament winding device

A filament winding device comprising a helical winding unit configured to helical-wind at least one fiber bundle onto a liner,

• the helical winding unit including:
• a frame member in which nozzle mounts are aligned in a circumferential direction centered at an axis of the liner;
• at least one nozzle unit including a guide body that is attachable to and detachable from at least one of the nozzle mounts, the guide body being movable in a radial direction of the liner, rotatable about a rotational axis extending in the radial direction, and capable of guiding a plurality of fiber bundles to the liner;
• an endless toothed annular body for moving, formed in an annular shape along the circumferential direction and configured to transmit power to all of the at least one nozzle unit attached to the at least one of the nozzle mounts, the power provided to move the guide body in the radial direction;
• and
• an endless toothed annular body for rotating, formed in an annular shape along the circumferential direction and configured to transmit power to all of the at least one nozzle unit attached to the at least one of the nozzle mounts, the power provided to rotate the guide body about the rotational axis.